On the design of new europium heteroaromatic carboxylates for OLED application
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Add time:08/06/2019 Source:sciencedirect.com
The approach to the directed synthesis of lanthanide aromatic carboxylates – precursors to the electroluminescent materials, - was proposed, namely the conjugation length increase and heteroatom introduction in the appropriate position in combination with the neutral ligand introduction. This resulted in the isolation of a series of new lanthanide complexes, among which the highest electroluminescence efficiency was obtained for mixed-ligand europium benzothiazole-2-carboxylate with bathophenanthroline in a solution-processed OLED. The peculiarities of energy transfer processes allowed obtaining luminescence thermometer materials based on this system, which demontrated the sensitivity of 2.8%/K in the physiological range.
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